Nut-lock and swab-protector.



W. V. TURNER.

K AND SWAB P Patented Oct. 1, 1918.

INVENTOR WQH'ZPV Turner b Qfir. W I

s narnn oni m WALTER V. TURNER, 0F WILKINSBURG, PENNSYLVANIA, ASSIGNORTO THE WESTING- HOUSE AIR BRAKE COMPANY, OF WILMERDING, PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA.

NUT-LOCK AND SWAP-PROTECTOR.

Specification of Letters Patent.

Patented Oct. 1, 1918.

Application filed June 29, 1917. Serial No. 177,763.

To all whom it may concern:

Be it known that I, WALTER V. TURNER, a citizen of the United States,residing at Wilkinsburg, in the county of Allegheny and State ofPennsylvania, have invented new and useful Improvements in Nut-Locks andSwab-Protectors, of which the following is a specification.

This invention relates to combined nut locks and swab protectors, andmore particularly to a protector adapted for use on 1ocomotive steampumps.

It has heretofore been proposed to provide a combined nut lock and swabprotector comprising hinged sections adapted to be operated by handlesfor inclosing the swab and the gland nuts of the pump piston rod, but insome types of steam pumps, there are certain projecting parts whichinterfere with the installation of a swab protector of the necessarylength to properly inclose the gland nuts as desired.

The principal object of my invention is to overcome the above difiicultyby providing a longitudinally collapsible swab protector which can becollapsed while inserting the same in position and then allowed toexpand so as to properly cover the parts to be protected.

In the accompanying drawing; Figure 1 is an elevational view of aportion of a steam pump, showing the improved swab protector as it isbeing inserted in position; Fig. 2 a side elevation, partly in section,of the swab protector, showing the parts in the normal expandedposition; and Fig. 3 a plan view thereof.

As shown in the drawing, the construction may comprise semi-cylindricalsections 1 and 2 hinged together by means of a hinge pin 3 and havingoperating handles 4 and 5 secured respectively to the sections 1 and 2,a coil spring 6 being mounted on the pin 3 and being adapted toyieldingly hold the hinged sections in the closed position.

Slidably mounted for vertical movement within the sections 1 and 2 aresemi-cylindrical sections 7 and 8 having headed pins 9 secured theretoand adapted to work in vertical slots 10 cut in the sections 1 and 2.

The sections 1, 2, 7 and 8 are provided. with vertical ribs 11 adaptedto engage with in the usual slots of the gland nuts 12 for locking thenuts against rotation.

In use, the sections 7 and 8 normally rest in their collapsed ortelescoped positions, being held there by gravity, and when it isdesired to apply the swab protector, the handles 4: and 5 are graspedand brought together, so as to open up the hinged sections 1 and 2. Thedevice is then placed in position, and due to the sections beingcollapsed, the protector can be moved into position over obstacles, suchasthe bosses 13, shown in Fig. 1 of the drawing.

After the device is in position surround-- ing the pump piston rod, thehandles being released, a ledge 14 at the. upper edge of the sections 7and 8 rests on top of the projections 15 of the upper nut 12 and thesections 1 and 2 drop down by gravity, so as to completely inclose thelower gland nut 12, the positions of the parts being then as shown inFig. 2 of the drawing.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A swab protector comprising semi-cylindrical members hinged together,handles for operating the same and additional semicylindrical membersmounted within and adapted to have a vertical movement relative to thehinged members.

2. A combined nut lock and swab protector comprising semi-cylindricalmembers hinged together, additional semi-cylindrical memberstelescopically mounted within said hinged members, said members havingprojections for engaging the gland nuts of the pump.

In testimony whereof I have hereunto set my hand.

WALTER V. TURNER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

